Toad for Data Analysts/DataPoint Freeware – ODBC only, but excellent way to analyse data from across multiple databases from different vendors. The non-freeware version connects natively to Oracle, DB2 and SQL Server (which makes it faster)

Academic Articles and Book

Other

KD Nuggets – a data mining site that’s been around since at least the late 90s.

Ayasdi – a leading academic based big data company focussed on combining cluster and tree type algorithms with intuitive human readable visual displays, should be interesting to see if they can find some truly valuable and generally applicable uses for this approach

IBM Big Data Hub – a web site dedicated to informing readers about Big Data and PureData for Hadoop in particular